Author: Circuitguy

Programmable Photovoltaic Transimpedance Circuit

Photovoltaic transducers has been widely used in medical, consumer, scientific instrumentation, and industrial applications. Photovoltaic sensors is a solid-state devices and available for wide range of wavelength response, cover from infrared, visible, and ultraviolet spectrum. This characteristic make this type of transducer applicable in diverse jobs such as colorimetry, chemical spectral analysis, non-contact thermometry, non-invasive blood-gas monitoring, and flame detection. […]

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Category: Basic Function Circuits, Testing and Measurement Tags: ,

Alternating Relay Switch

Our reader Andrea (andrea[dot]perugia[-at-]gmail[dot] com) sent his circuit to us, and he creates the circuit for educational intent. The main purpose is to show that you can toggle an output state electronically, although physically you use only a push button switch. Here is what he said about the cicuit : This simple circuit can be utilized to drive a monostable […]

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Category: Control and Monitoring Tags:

Autoranging Circuit

Autoranging is useful to extend the measurement range of an available ADC (analog-to-digital converter).  Autoranging will best implemented for multiplexed input.  LTC1257 is appropriate for system autoranging, adjusting an ADC’s full-scale range. During the conversion process, U2 and U3 receive the full and zero scale codes, respectively, that correspond to a selected multiplexer channel. For example, let channel 2’s span […]

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Category: Control and Monitoring, Testing and Measurement Tags:

Gamma Correction Circuit

Transducers is used in video system to convert optical signal to electrical signal in the acquisition. In the display, transducer is used to convert electrical signal back to light. Transducers often have a transfer function (the ratio of signal in to light out) that is unacceptably nonlinear. The newer technology of video camera transducers (the improved versions of vidicon-like tubes […]

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Category: RF and Video Tags:
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